Dwight Martin leads CrossTies Asia, an effort to track Christian churches in Thailand and other Asian countries. He is an ordained Baptist pastor.

Al Makin is a philosophy professor at Sunan Kalijaga State Islamic University in Indonesia. He researches New Religious Movements with a particular interest in Millah Abraham, a faith group that originated in Indonesia.

Tim Hutchings is an assistant professor of religious ethics at the University of Nottingham. His dissertation was about online Christian churches and his research remains focused on digital religion.

The Rev. Janna Ziegler is rector and senior pastor of the Church of the Resurrection in Los Angeles, which she co-founded.

Daniel Yang directs the Send Institute, a think tank focused on church planting in the North American context. The Send Institute is based at the Billy Graham Center at Wheaton College. Arrange an interview with Yang by filling out the contact form on his website.

The Rev. Janet Waggoner is canon to the ordinary for the Episcopal Diocese of Fort Worth, Texas. She also serves as chairwoman of the Episcopal Church’s Task Force on Church Planting and Evangelism.

J.D. Payne is an associate professor of Christian ministry at Samford University in Birmingham, Alabama. He specializes in church planting and evangelism.

Joseph Laycock is an assistant professor of religious studies at Texas State University, where he researches New Religious Movements and American religious history.

Scott Hildreth is an assistant professor of global studies at Southeastern Baptist Theological Seminary, where he also directs the Center for Great Commission Studies.